Antietam ink - Is a Red-orange color that leans more red with brown undertones. many say that is has the appearance of drying blood. which could be where it got its name Antietam with is in reference to the deadliest one day battle in American history. This historic event took place September 17, 1862, at Antietam Creek near Sharpsburg, Maryland. This one battle cost The Union a 12,410 casualties with 2,108 dead. Confederate casualties were 10,316 with 1,547 dead.